5(0.2)+2(3(0.2)-1)=7(3(0.2))

Solution for 5(0.2)+2(3(0.2)-1)=7(3(0.2)) equation:

Simplifying
5(0.2) + 2(3(0.2) + -1) = 7(3(0.2))

Multiply 5 * 0.2
1 + 2(3(0.2) + -1) = 7(3(0.2))

Multiply 3 * 0.2
1 + 2(0.6 + -1) = 7(3(0.2))

Combine like terms: 0.6 + -1 = -0.4
1 + 2(-0.4) = 7(3(0.2))

Multiply 2 * -0.4
1 + -0.8 = 7(3(0.2))

Combine like terms: 1 + -0.8 = 0.2
0.2 = 7(3(0.2))

Multiply 3 * 0.2
0.2 = 7(0.6)

Multiply 7 * 0.6
0.2 = 4.2

Solving
0.2 = 4.2

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.